Device for treating blocked ladle mouth of refined steel slag
By designing a device comprising a main hook, a secondary hook, a slag-breaking cone, a telescopic rod, a slag scraper, and a nozzle, steel slag crust is removed using high-temperature steam injection and mechanical cleaning, thus solving the problem of narrowing ladle opening, improving processing efficiency, and reducing labor intensity.
Patent Information
- Application Number
- CN202422779403.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-14
AI Technical Summary
In the prior art, the crust formation at the ladle opening causes the ladle opening to shrink, affecting refining operations, and the cleaning process damages the refractory material and increases labor intensity.
Design a device comprising a main hook, a secondary hook, a slag-breaking cone, a telescopic rod, a slag scraper, a nozzle, and a boom to remove steel slag crust through high-temperature steam injection and mechanical cleaning, thereby avoiding damage to refractory materials.
It enables rapid and effective cleaning of steel slag crust, improves processing efficiency, reduces labor intensity, and protects the refractory materials of the steel ladle.
Smart Images
Figure CN223465560U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a device for treating and plugging ladle opening of refining slag, and belongs to the technical field of metallurgical engineering in metallurgical industry. BACKGROUND
[0002] The ladle is a container used for transporting molten steel in a steel and iron metallurgical enterprise. Since the ladle opening part has a faster heat dissipation, the rapid temperature drop causes a layer of slag crust to be formed near the ladle opening. The slag crust is easily formed on the surface of slag when smelting high-carbon steel, high-construction steel and Z-direction steel. When the tapping temperature of the converter is low or the residual slag layer is thick, the ladle opening crust is more likely to be formed.
[0003] The more the ladle is used, the larger the surface crust area and volume will be. Since the incomplete pouring residue is likely to form a larger rim at the opening, the increase in the area of the crust and rim causes the ladle opening to become smaller and smaller. When the ladle enters the refining smelting, it has a great impact on the ladle opening and the electric and vacuum operations of the refining LF furnace and RH furnace, and even causes the electrode to break and the RH immersion tube lower opening to be broken. In addition, since the ladle opening is small, part of the molten steel flow impacts the crust and splashes outward during tapping, which is likely to cause smoke and safety accidents. Moreover, the volume of the crust gradually increases after the ladle is used multiple times, which causes the volume of the ladle to gradually decrease and the composition to be more and more affected.
[0004] At present, when the ladle crust is serious, an oil hammer is usually used to treat the ladle crust or the slag is forcibly refined. This method is likely to cause damage to the refractory material of the ladle, affects the repeated use of the ladle, and requires a long time to treat the crust. In addition, multiple people are required to cooperate when treating the rim each time, which increases the labor intensity of the workers. UTILITY MODEL CONTENT
[0005] The utility model aims to provide a device for treating and plugging ladle opening of refining slag, which can conveniently and quickly clean the slag crust of the ladle opening, avoid damage to the ladle refractory material, improve the ladle opening treatment efficiency, and solve the problems in the background art.
[0006] The technical scheme of the utility model is as follows:
[0007] A device for treating and plugging ladle opening of refining slag, comprising a main hook body, a secondary hook body, a slag breaking cone, an extension rod, a lifting hole, a slag scraping plate, a nozzle and a lifting arm. The main hook body and the secondary hook body are cross-shaped and welded together to form a hook body. The lower surface of the hook body is provided with the slag breaking cone, the slag scraping plate and the nozzle. The nozzle is connected with a high-temperature steam pipeline. The lifting arm is provided with the lifting hole and located above the hook body. The lifting arm is connected with the main hook body through the extension rod.
[0008] The slag breaking cone and the slag scraping plate are respectively fixed on the hook body.
[0009] The scraper plate is composed of a plurality of curved scrapers, the curvature of which matches the structure of the ladle opening.
[0010] The jetting direction of the nozzle below the hook body is toward the slag crust at the ladle opening.
[0011] The upper end of the telescopic rod is fixedly connected to the boom, and the lower end of the telescopic rod is rotatably connected to the main hook body.
[0012] A reinforcement plate is welded between the main hook body and the auxiliary hook body.
[0013] The reinforcing plate between the main hook body and the auxiliary hook body is inclined.
[0014] The beneficial effects of the utility model are: the slag crust at the ladle mouth can be cleaned conveniently and quickly, damage to the refractory material of the ladle is avoided, the ladle mouth processing efficiency is improved, and the labor intensity of employees is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Fig. 1 This is the main view of the utility model;
[0016] Fig. 2 This is a side view of the utility model;
[0017] Fig. 3 It is a partial schematic diagram of the utility model;
[0018] In the figure: 1-main hook body, 2-auxiliary hook body, 3-reinforcement plate, 4-slag breaking cone, 5-telescopic rod, 6-lifting hole, 7-slag scraper, 8-nozzle, 9-lifting arm, 10-lifting thread, 11-parallel thread. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings and examples.
[0020] Refer to the attached Figs. 1-3 A device for processing refined steel slag and sealing the ladle opening comprises a main hook body 1, an auxiliary hook body 2, a slag breaking cone 4, a telescopic rod 5, a hanging hole 6, a scraping plate 7, a nozzle 8 and a lifting arm 9. The main hook body 1 and the auxiliary hook body 2 are welded together in a cross shape to form a hook body. A slag breaking cone 4, a scraping plate 7 and a nozzle 8 are provided under the hook body. The nozzle 8 is connected to the high-temperature steam pipe. A hanging hole 6 is provided on the lifting arm 9. The lifting arm 9 is located above the hook body and is connected to the main hook body 1 through the telescopic rod 5.
[0021] In this embodiment, the device includes a main hook body 1, an auxiliary hook body 2, a reinforcement plate 3, a slag breaking cone 4, a telescopic rod 5, a lifting hole 6, a scraper plate 7, a nozzle 8 and a lifting arm 9. The main hook body 1 and the auxiliary hook body 2 are welded together in a cross shape to form a hook body. The four right angles at the connection between the main hook body 1 and the auxiliary hook body 2 are welded and fixed with a reinforcement plate 3 to prevent cracking.
[0022] The lifting hole 6 is arranged at the upper 1 / 3 of the lifting arm 9, the main hook body 1 is connected with the lifting arm 9 through the telescopic rod 5, the telescopic rod 5 is arranged in the lifting arm 9, the end of the telescopic rod 5 is welded with the lifting arm 9, the telescopic rod 5 is controlled to stretch and retract through the controller, and meanwhile the telescopic rod 5 controls the rotation of the main hook body 1 through the control system, so that the slag breaking operation is facilitated.
[0023] The slag breaking cone 4 and the slag scraping plate 7 are welded below the hook body, the slag breaking cone 4 is made of SM50 high-carbon steel material, and the strength meets the production requirement. The slag scraping plate 7 is composed of a plurality of curved scraping plates, the curvature of the slag scraping plate 7 is matched with the structure of the ladle opening, the slag scraping plate 7 can break and clean the ladle opening crust; the nozzle 8 is also arranged below the hook body, the nozzle 8 is connected with a high-temperature gas pipeline, the nozzle 8 sprays high-temperature gas to heat treat the ladle opening crust, and the ladle opening crust is softened to facilitate cleaning.
[0024] The working process of the utility model is as follows:
[0025] The refining worker needs to pass the cantilever crane anchor hook into the lifting hole 6 and fix the safety pin; the hook body is roughly adjusted according to the ladle placement position and point, accurately centered according to the instruction of the commander, and the hook body is placed in the range of 300-500 mm from the ladle crust.
[0026] Before preparing to break the slag shell operation, first, the lifting arm 9 is determined to be in the vertical state, the cantilever 9 is fixed, the steel wire rope is lifted, and then the next operation can be performed.
[0027] The control system controls the rotation of the main hook body 1, the ladle edge slag is cleaned through the rotation of the hook body, and the cleaned steel slag falls into the slag pan along the reinforcing plate 3. Meanwhile, the nozzle 8 sprays high-temperature gas to heat treat the ladle opening steel slag crust, and after the slag shell surface is preheated, the steel slag is completely cleaned through the slag breaking cone 4 and the slag scraping plate 7.
Claims
1. A device for treating a closure of a ladle for refining steel slag, characterized in that: The hook body comprises a main hook body (1), a secondary hook body (2), a slag breaking cone (4), an extension rod (5), a lifting hole (6), a slag scraping plate (7), a nozzle (8) and a lifting arm (9). The main hook body (1) and the secondary hook body (2) are cross-welded together to form a hook body. The lower part of the hook body is provided with the slag breaking cone (4), the slag scraping plate (7) and the nozzle (8). The nozzle (8) is connected with a high-temperature steam pipeline. The lifting arm (9) is provided with the lifting hole (6). The lifting arm (9) is located above the hook body and is connected with the main hook body (1) through the extension rod (5).
2. A device for treating the mouth of a ladle for closing the opening of a ladle of refined steel according to claim 1, characterized in that: The slag breaking cone (4) and the slag scraping plate (7) are respectively fixed on the hook body.
3. A device for treating the mouth of a ladle for closing the opening of a ladle for molten steel according to claim 2, characterized in that: The slag scraping plate (7) is composed of a plurality of curved scraping plates, and the curvature thereof is matched with the structure of the ladle opening.
4. A device for treating the mouth of a ladle for closing the opening of a ladle for molten steel according to claim 1, characterized in that: The nozzle (8) is located below the hook body, and the jet direction thereof is towards the slag crust of the ladle opening.
5. A device for treating the mouth of a ladle for closing the opening of a ladle for molten steel according to claim 1, characterized in that: The upper end of the extension rod (5) is fixedly connected with the lifting arm (9), and the lower end of the extension rod (5) is rotationally connected with the main hook body (1).
6. A device for treating the mouth of a ladle for closing the opening of a ladle for molten steel according to claim 1, characterized in that: The main hook body (1) and the secondary hook body (2) are welded with a reinforcing plate (3).
7. A device for treating the mouth of a ladle for closing the opening of a ladle for molten steel according to claim 6, characterized in that: The reinforcing plate (3) between the main hook body (1) and the secondary hook body (2) is in an inclined shape.